Zobrazeno 1 - 10
of 116
pro vyhledávání: '"Arunagiri S"'
Autor:
Arunagiri, S.
Spin current of a Dirac particle is shown to be given by the geometric phase and in terms of the later, a closed form expression is obtained for the dissipationlessness of the spin current.
Comment: 2 pages, 1 figure
Comment: 2 pages, 1 figure
Externí odkaz:
http://arxiv.org/abs/1107.4536
Autor:
Arunagiri, S.
Quantum state, in relativistic quantum mechanics, itself turns out to be an entangled state due to its own degrees freedom such as spin and momentum. This peculiar entanglement leaves the transformed state mixed. We consider the fractional charge sta
Externí odkaz:
http://arxiv.org/abs/0911.3030
Autor:
Arunagiri, S.
The zitterbewegung being proportional to $\sin(\epsilon t)$, it is depicted as the motion of electron from the positive energy state to that of the negative energy and vice versa in the neighbourhood of Dirac point. Since such transition involves cro
Externí odkaz:
http://arxiv.org/abs/0911.0975
Autor:
Arunagiri, S., Geng, C. Q.
Publikováno v:
Phys.Rev. D69 (2004) 017901
We study Lambda_b --> Lambda pi pi. The branching fraction is predicted to be about 4.38 x 10^{-6}%. Within the standard model, we compute T-odd triple product asymmetries to be about 1.4, 4.3, 6.5 and 7.2% respectively due to s_{Lambda_b}(s_Lambda)
Externí odkaz:
http://arxiv.org/abs/hep-ph/0307307
Autor:
Arunagiri, S., Geng, C. Q.
Triple product correlations (TPC's) involving strange quark spin are elucidated in b --> u u(bar) s process within the standard model. They arise when light quark masses are nonzero. As the momenta and spins of constituent quarks are related to that
Externí odkaz:
http://arxiv.org/abs/hep-ph/0305268
Autor:
Arunagiri, S.
We consider the interference of resonant amplitudes leading to the final state $K_S \pi^+ \pi^-$ in $D^0/\bar {D^0}$ decays. Each of these amplitudes consists of both Cabibbo allowed and doubly Cabibbo suppressed transitions. The role of strong phase
Externí odkaz:
http://arxiv.org/abs/hep-ph/0203174
Autor:
Arunagiri, S.
Publikováno v:
Nucl.Phys.Proc.Suppl. 94 (2001) 333-336
We study the corrections due to renormalons to the heavy hadron decay width.The renormalons contribution estimated in terms of finite gluon mass based on the assumption that the gluon mass represents the short distance nonperturbative effects in the
Externí odkaz:
http://arxiv.org/abs/hep-lat/0011061
Autor:
Arunagiri, S.
The two important issues concerning the theory of inclusive decays are studied: (1) evaluation of expectation values of four-quark operators in order to systematically include the spectator effects and (2) estimation of duality breaking corrections i
Externí odkaz:
http://arxiv.org/abs/hep-ph/0009293
Autor:
Arunagiri, S.
Publikováno v:
Continuous Advances in QCD 2000, Edited by M. B. Voloshin, p. 305 (World Scientific, 2001)
We discuss (i) the evaluation of the expectation values of four-quark operators assuming that the heavy quark expansion for $b$ sector converges at the third order in $1/m_Q$, and (ii) the estimation of the duality breaking short distance nonperturba
Externí odkaz:
http://arxiv.org/abs/hep-ph/0009110
Autor:
Arunagiri, S.
I review the role of the spectator quarks effect in the inclusive beauty decays. The evaluation of the expectation values of four-quark operators between hadronic states and its consequences are discussed.
Comment: 3 pages, Revetex
Comment: 3 pages, Revetex
Externí odkaz:
http://arxiv.org/abs/hep-ph/0004002